Deaerating and deoiling machine



Jun 19, 1934. c. G. HAWLEY 1,963,200

DEAERATING AND DEOILING momma Original Filed July 24, 1926 ///l I l I/III 'l/l l/I/ll/ l/l/ ll Patented June 19, 1934 UNITED STATES DEAERATINGAND DEOILING MACHINE Charles Gilbert Hawley, Chicago, Ill., assignor toCentrifix Corporation, Cleveland, Ohio, a corporation of OhioContinuation of application Serial No. 124,681,

July 24, 1926.

This application April 5, 1932,

Serial No. 603,417. Renewed November 3, 1933 Claims. (01. 210-61) Thisinvention relates to the important and little-developed art of removingoils and gases from liquids that should be freed from such foreignsubstances. Such is the object of the present a bi invention.

As will presently appear the machine embodying this invention is of acentrifugal type in which the stream of liquid under treatment is setinto a state of rotation which increases the travel 1 of the liquid andaffords ample time for the separation of the lighter substances. Furtherand importantly, the entrance of the liquid to the machine isaccompanied by the fine sub-division of the liquid stream anddisturbances which effect the combing out or liberation of even minuteparticles and globules of gas or oil that are very closely or firmlyoccluded in the liquid. Further and of utmost practical value, thewhirling action of the liquid, which takes place within the machine asabove mentioned, is suppressed in the region in which the lightersubstances accumulate following their separation from the liquid.Without such protection, the vortexial action of the liquid within themachine would 2 inevitably result in the extraction of the separatedsubstances and the discharge thereof from the machine along with thestream of liquid.

The invention also consists in novel combinations of parts and indetails of construction com- 3 prising such machine, and whereby theforegoing process may be reliably conducted; all as hereinafterdescribed and particularly pointed out in the claims.

The invention will be readily understood on L reference to the drawingthat forms part of this specification; and in which, Fig. 1 is avertical section of a machine embodying the invention and whereby thenovel process may be carried out; Fig. 2 is a horizontal section thereofon line 2-2 1 of Fig. 1; Fig. 3 is a horizontal section on the line 3-3of Fig. 1.

The machine in its best form comprises a vertical casing preferablycomposed of the large dome portion 2 and the smaller bottom portion 3.The dome portion is a closed vessel, and is provided with the valved andnormally closed top outlet 4 for the gases, and preferably with thelower, side outlet 5 for the discharge of the oil or other liquidimpurities. The outlet 5 in fpractice is also valved and normallyclosed. Ob-

viously, in operations of large size the outlets 4 and 5 may becontinuously open, but a better understanding of the invention will begained by first regarding them as normally closed and I onlyintermittently opened to discharge the collected substances. The bottommember 3 con-- tains the flow-balancing opening 6, the underly- I ingchamber 7 and the outlet connection 8. The stand-pipe 9 rises fromthecentral portion 7 and passing through the chamber 7 is expandedwithin the dome; to form the head 10. The liquid inlet pipe 12 entersthe lower end of the standpipeQ. The liquid outlet pipe 13 leads awayfrom the connection 8. Upon the removal of the bottom bolts 11, the dome2 may be removed from the parts i 3 to 10 forming the bottom of themachine.-

It should at once be understood that the pipes 12 and 13 rise to heightsabove the dome, or are used under suflicient pressure to keep the domefilled with liquid at least to the height of the side outlet pipe 5.Further, it is tobe understood that the gas outlet 4' is opened wheneverthe liquid level, L, is forced below the side outlet by the accumulationof gas in the top of thej dome. In practice, the dome is equipped with agage; (not shown), either serving to automatically' release theaccumulating gas or to makethe liquid level, L, visible so that theoutlet 4 may be manually opened when required. Gages of such kinds aretoo well known to require illustrationhereinj On entering the head-10theburdened liquid, that is, the liquid which isburdened orcontami natedby impurities of either solid, gaseous-or liquid form and of lessspecific gravity encounters the centrifugal'tuyre 14, which has manyinwardly directed narrow slit-like tangential'tuyres 14'.The'tuyrei'sprovided with an im: perforate bottom 14", so that all ofthe liquid from the space 10"must pass through the tangential 'tuyeresin order to reach theexterior of the head 10, and find a passage leadingdownward to the outlet. Obviously the liquid takes on a rapid whirlingmotion within the tuyere. Conveniently, the barrel of the tuyre isprovided with a top flange 15 whereby it is attached to the top of thehead 10. The fine sub-division of the liquid in the tuyres of the member14, and the impingement of the liquid against the many edges of thetuyere forming blades thereof, serve to disturb and free the particlesor globules of gas and oil 19. carried by the liquid; and the whirlingof the liquid within the tuyre 14 accomplishes an excellent centrifugalseparation of the substances and in such state they are expelledupwardly through the open upper end of the tuyre 14. .9. Severalrotations, of any given part of the liquid, take place in the tuyre andthus ample time is allowed for both the centrifugal and the gravityseparation and agglomeration of the minute globules, so that globulesand bubbles of consid- L to draw more vigorously from one side ofthedome is corrected by making the hole 6 properly eccentric to thestand-pipe 9 and space '7, (see Fig. 1). V

Were the whirling liquid allowed to escape freely from the tuyere, thewhole'body of liquid in the dome would be set into rapid rotation and adownward drawing central vortex, starting at the level, L, would besetup and necessarily in direct connection with the outlet; Any suchcentral vortex would have the effect of emptylngthe the intended purposeof the large measure, would be top of the dome and machine, at least indefeated, v

For the avoidance of so-vital a defect, I employ means which prevent thecommunicationof the whirling-motioninthe tuyere to the liquid in thetop'of-the dome and which therefore prevent the initiation-oftheobjectionable vortex at. the liquidsurface orlevel. The means referredto possess theadvantagesof extreme simplicity and durability comprisingonlythe barrel. 1G and the vertical spaced blades or baffles 1'7therein. The deviceis called-a cellular barrel,.interposed'between thesource -0f=whirling motion and the level at which the lighter orfloatable substances are disengagedfrom the heavier liquid.

Most conveniently the barrel 16 is a mere upward extension of thestationary. tuyere, being securedto the headlO by the same flange 15. Itshould be apparent that the cellular barrel-and thedome-neednotbecircularbut may be of any desiredshape in-cross section. I e g Thisapplication is a continuation of applicants earlierfiledapplication, S.N. 124,681filedJuly 24, 192? Y.

- Having thus-describedmy.invention, I claimas new and desire to-secureby Letters-Patent;

LUA machine'for separating lighter floatable substances from liquidsofgreater weight, comprising a casing having a liquid outlet at itsbottom,in combination with a liquid inletpassage risingwithinthe lower part ofsaid casing, a tan gentiallybladed tuyere part of said passagaand, acellular duct positioned belowthe liquid level in said casing. andforming the outlet for said tuyere and passage.

2. A machined-or separating lighter floatable fixed within and 1 formingsubstances from liquids of greater weight, comprising a casing having aliquid outlet at its bottom and provided with means for discharging theseparated substances from its top, in combination with a liquid inletpassage rising within the lower part of said casing, a Whirl-promotingtuyere positioned in and forming part of said passage, and,

a longitudinally subdivided vertical duct positioned below the liquidlevel of said casing and forming the outlet for said whirl-promotingtuyere and passage.

3. A machine for separating lighter floatable substances from liquids ofgreater weight, comprisinga casing having a liquid outlet in its bottomand provided with means for discharging the separated substances fromits top, in combination with a liquid inlet passage opening upwardwithin the intermediate part of said casing, an angularly bladedWhirl-promoting tuyere interposed in and forming part of said passage,and, whirl suppressing means positioned in the. upper part. of saidpassage.

, 4. A liquid-purifier comprising a casing adapted tocontaina stand ofliquid and having its upper part open for the discharge of impuritiesfrom the top thereof, said. casing having-a purifiedliquid outlet initslower part, in combination with a liquid inlet passagev of'smallerdiameter than .and opening vertically within the intermediate part ofsaidcasing, means incorporated withthe lower part of said inlet passageand .adaptedto cause. the entering liquid'to rotate .vortei'riallytherein, and, means passage and adaptedto terminate such whirling,movementof the liquid'and direct it upward toward thetop of said standofliquidwithin the a in .f

51 A liquid purifier comprising acasing-adapted. to contain a standlofliquid and having its upper part open for. the discharge of impuritiesfrom the top thereof ,said casing having a purified liquid outlet in itslower part, in combination with a liquid inlet passage of smaller andopening vertically within the intermediate part of saidcasing,atangentially slotted tuyre positioned within the lower part oi'saidinlet passage and' adapted to cause the entering liquid to. rotatevortexially therein, and, an opposing bladed. structure positionedwithin the upper part of said inlet passage and adaptedto terminate.

such whirling movement of the liquid anddirect it upward towardthe topof said stand ofliquid within the casing.

CHARLES GILBERT VHAWLEYZV Within the upper part ofsaid; inlet diameterthan-

